Extrusion



FIG. 1 is a front elevation view of an extrusion, the rear elevationview being identical thereto;

FIG. 2 is atop plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side elevation view thereof, the right side elevationview being identical thereto; and,

FIG. 5 is a top, front, and left perspective view thereof.

CLAIM We claim the ornamental design for an extrusion, as shown anddescribed.